Home / 108,729.05-163,135.09-42,215.88

Finding the Fourth Proportional to 108,729.05, 163,135.09 and 42,215.88

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Solution

The fourth proportional to 108,729.05, 163,135.09 and 42,215.88 is: 63,339.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.05 : 163,135.09 = 42,215.88 : x
  2. Step 2: Convert to fraction form
    108,729.05/163,135.09 = 42,215.88/x
  3. Step 3: Cross multiply
    108,729.05x = 163,135.09 × 42,215.88
  4. Step 4: Simplify right side
    108,729.05x = 6,886,891,383.23
  5. Step 5: Solve for x
    x = 6,886,891,383.23/108,729.05
  6. Step 6: Final answer
    x = 63,339.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.